#define  _CRT_SECURE_NO_WARNINGS
#include<stdio.h>
int main()
{
	char arr[1000] = { "0" };
	int n,i;
	char a;
	scanf("%d", &n);
	for (i = 0; i < n; i++)
	{
		a = getchar();
		arr[i] = a;
	}
	return 0;
}